CHARACTERISTICS OF PLASTICITY AND MICROSTRUCTURE OF HOT FORMING MAGNESIUM ALLOYS Mg-Al-Zn TYPE

被引：23
|
作者：
Kuc, D. [1 ]
Hadasik, E. [1 ]
Schindler, I. [2 ]
Kawulok, P. [2 ]
Sliwa, R. [3 ]
机构：
[1] Silesian Tech Univ, Fac Mat Engn & Met, PL-40019 Katowice, Poland
[2] VSB Tech Univ Ostrava, Fac Met & Mat Engn, Ostrava 70833, Czech Republic
[3] Rzeszow Univ Technol, Fac Mech Engn & Aeronaut, PL-35959 Rzeszow, Poland
来源：
ARCHIVES OF METALLURGY AND MATERIALS | 2013年 / 58卷 / 01期
关键词：
magnesium alloy; research of plasticity; microstructure; dynamic recrystallization; activation energy; BEHAVIOR; FLOW; AZ31;
D O I：
10.2478/v10172-012-0166-5
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The paper presents analysis of plasticity characteristics and microstructure of magnesium alloys for hot plastic treatment with different aluminium content (3 divided by 8%). Tests were conducted for assessment of susceptibility of tested alloys to hot plastic deformation. A tensile test was run in temperature from 250 to 450 degrees C. Based on the results, ultimate tensile strength (UTS) and reduction of area (Z) were determined for samples. Conducted compression tests allowed to specify the flow stress and microstructure changes after deformation. The activation energy in hot forming was determined for investigated alloys. The parameters of the process where flow is significantly influenced by twin formation in microstructure were determined. A varied plasticity of tested alloys was found depending on aluminium content. Test results will be useful in development of forging technology of selected construction elements which serve as light substitutes for currently used materials.
引用
收藏
页码：151 / 156
页数：6
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